photo-uthograplier



tive view of the entiremachine.

The nature of our invent-ion consists in` UNITED sTATEs 'PATENT oEEIoE.

NATHAN DAWES AND H. HARRISON, OF LITTLE YORK, NEIV JERSEY.

BOOT-CRIME.

. specification of Letters Patent No. 8,127, dated May 27, 1851.`

To all 'whom t may concern:

Be it known that we, NATHAN DAwEs and HIGGINS HARRISON, of Little York, in the county of Hunterdon and State of New Jersey, have invented a new and useful Improvementin Boot-Crimps; and we do hereby declare the following to be a full, clear, and eXact description, reference being had to the accompanying drawing, making part of the same, and which represents a perspecso constructing and arranging the crimping plates upon a spring frame, as that they will adjust themselves to any thickness of leather, and be capable of receiving any desired pressure thatmay be put `uponV them inthe direction in which the creases are driven, as the tree which contains the leather is forced through said crimping plates. .j

To enable others skilled in the art to make and use our invention, we will proceed to describe the same with reference to the drawing. j To the jaws A, ofa spring `metallic frame B, is firmly riveted the crimping `plates C, said crimping plates corresponding in shape, nearly, with 'the shank of the tree D, over which the leather or boot front, is being crimped. As thepoints `of the crimping plates are in advance, and the sides sloping off, the creases in theleather are forced from the center of said crimping plates toward the ends, where they are caught and forced down by the two sets of steel springs, which are opposite each other on each side of the spring frame B. These sprin s F, F, ar'e firmly riveted to the crimping p ates on each side of the machine.- On one of said springs F, in each set, is a clasp or link Gr,

which is made to catch and hold the opposite spring, and by forcing said clasp up or down on its corresponding or opposite spring, it will increase or diminish the pressure upon the leather as may be desired or as the leather may be hard or easy to" be crimped. If the creases in the leather tend towardone side ofthe jaws more than the other, which aften happens, thesprings F, F, on that side may be tightened by sliding up the clasp or link G, while the springs on the opposite side may be'slackened so as to adjust the pressure to the desired point, without having the whole crimping plate bear so hard as to tear the leather, or stop the operation of the machine, thus making the pressure adjustable to the particular tially the same.

ing turned, forces the said tree, ,with` the leather upon it to be crimped, through between the crimping plates, and draws the leather down to the shape of the tree, and there holds it without the use of jaws or nippers` of any kind which strain the leather 'too much at particular points and often tear it. The creases are caught and forced out by the springs F, F, which are adjustable by means of the links G as heretofore described.

The operation is as follows, the leather is placed across the edge of,Y the tree, and slightly bent or pressed with the lingers along the edge of said tree. The said tree is then placedbetween the crimping plates, andthe clasps which hold the springs together put in place. The point of the screw rod is then placed in the step in the angle of the tree, and by means of the crank on the upper end of said rod the tree with the leather upon it is forced between the crimping plates, which brings the leather to the exact. shape o-f the tree. By this arrange` ment we avoid the necessity of a frame to place the tree in, we also avoid the use of jaws or nippers, which often tears and destroys the leather.

Having thus fully described our invention what we, claim `therein as new, and desire to secure by Letters Patent, is-

The combination of the spring frame B, crimping plates C, and boot tree D, with the adjustable side springs F, F, for the purpose of crimping boot fronts and adjusting the pressure of the crimping plates to the particular point in which the creases have a tendency to run,the whole being` arranged in the manner herein described and represented, or in any other manner essen- NATHAN DAVES.` HIGGINS HARRISON.

Witnesses:

B. K. MoRsELL, A. B. STouGHToN. 

